如何辨别自己的黄金是不是金包银？成都典当行黄金回收典当推荐及时雨

Group 1 - The article discusses various methods to identify pure gold versus gold-plated silver, emphasizing the importance of recognizing genuine gold to avoid potential fraud [1][5][7] - Observational methods include examining the color and craftsmanship of the gold item, where pure gold exhibits a bright, uniform yellow hue and smooth surface, while gold-plated silver may appear dull or uneven [1][5] - The article outlines the density method, where pure gold has a density of approximately 19.32 grams per cubic centimeter, and discrepancies in weight can indicate gold-plated silver [5][7] Group 2 - The article mentions the "marking method," where legitimate gold jewelry typically bears stamps like "足金" or "AU999," and the absence of such markings raises suspicion [5] - The sound test is described, where pure gold produces a deep, dull sound when struck, contrasting with the sharper sound of gold-plated silver [5][7] - Chemical testing is highlighted as a method to differentiate gold types, where pure gold does not react with nitric acid, while silver does, indicating the presence of gold-plated silver [7] Group 3 - Professional testing is recommended for accurate identification, suggesting that items be sent to certified jewelry testing institutions for precise analysis using advanced equipment [7] - The article concludes with a reminder from a pawn shop in Chengdu, advising consumers to purchase gold through legitimate channels to ensure authenticity [9]